JPS5597732A - D-a converter - Google Patents

D-a converter

Info

Publication number
JPS5597732A
JPS5597732A JP10960279A JP10960279A JPS5597732A JP S5597732 A JPS5597732 A JP S5597732A JP 10960279 A JP10960279 A JP 10960279A JP 10960279 A JP10960279 A JP 10960279A JP S5597732 A JPS5597732 A JP S5597732A
Authority
JP
Japan
Prior art keywords
signal
differentiator
pass filter
low
accurate analog
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10960279A
Other languages
Japanese (ja)
Inventor
Harisu Korubaan Jiyuderu Niiru
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hewlett Packard Japan Inc
Original Assignee
Yokogawa Hewlett Packard Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yokogawa Hewlett Packard Ltd filed Critical Yokogawa Hewlett Packard Ltd
Publication of JPS5597732A publication Critical patent/JPS5597732A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06J—HYBRID COMPUTING ARRANGEMENTS
    • G06J1/00—Hybrid computing arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
    • H03M1/0626—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by filtering
    • H03M1/0631—Smoothing

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Automation & Control Theory (AREA)
  • Evolutionary Computation (AREA)
  • Fuzzy Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • Analogue/Digital Conversion (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

PURPOSE: To obtain an accurate analog output by changing a digital signal into a digital word showing its amplitude before D/A conversion.
CONSTITUTION: Before being led to D/A converter 16, input digital signal 2A is changed into digital word signal 2B expressing its amplitude through the totalization of totalizer 14. This signal is D/A-converted into step-shaped analog signal 2C, which is differentiated by differentiator 18 to obtain pulse signal 2D. Here, according to the Nyquist logic, accurate analog conversion is possible only when a signal with pulse width zero is inputted to a low-pass filter. Therefore, accurate analog signal 2E appears at the output of low-pass filter 20. If differentiator 18 would operate improperly, the order of low-pass filter 20 and differentiator 18 is changed, so that the distortion of the filter can be avoided.
COPYRIGHT: (C)1980,JPO&Japio
JP10960279A 1978-09-07 1979-08-28 D-a converter Pending JPS5597732A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/940,250 US4219879A (en) 1978-09-07 1978-09-07 Digital to analog conversion system

Publications (1)

Publication Number Publication Date
JPS5597732A true JPS5597732A (en) 1980-07-25

Family

ID=25474496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10960279A Pending JPS5597732A (en) 1978-09-07 1979-08-28 D-a converter

Country Status (4)

Country Link
US (1) US4219879A (en)
JP (1) JPS5597732A (en)
DE (1) DE2932528A1 (en)
GB (1) GB2037108B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60193082A (en) * 1984-03-14 1985-10-01 Toshiba Corp Analog signal processor
US5038143A (en) * 1987-12-09 1991-08-06 Texas Instruments Incorporated Analog interface system
US4901077A (en) * 1988-04-18 1990-02-13 Thomson Consumer Electronics, Inc. Sigma-delta modulator for D-to-A converter
JP2762612B2 (en) * 1989-09-27 1998-06-04 キヤノン株式会社 Signal processing device
KR0170259B1 (en) * 1993-07-26 1999-03-30 김광호 Signal processing method and apparatus
JP3909059B2 (en) * 2004-01-07 2007-04-25 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー Radiation tomographic imaging apparatus and imaging method using the same
TWI416879B (en) * 2010-01-18 2013-11-21 Univ Nat Chiao Tung Digital analog conversion device
US11221400B2 (en) * 2018-03-27 2022-01-11 Omnivision Technologies, Inc. Dual mode stacked photomultipliers suitable for use in long range time of flight applications

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5270707A (en) * 1975-12-09 1977-06-13 Nec Corp Automatic phase control system

Also Published As

Publication number Publication date
US4219879A (en) 1980-08-26
GB2037108A (en) 1980-07-02
GB2037108B (en) 1982-11-17
DE2932528A1 (en) 1980-03-20

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